////////////////////////////////////////////////////////////////////////////////
// This file is part of the Mist compiler.                                    //
//                                                                            //
// Copyright (C) 2008, 2009 The Mist project                                  //
//                                                                            //
// For a list of contributors, see the COMMITTERS file.                       //
//                                                                            //
// The Mist compiler is free software: you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by       //
// the Free Software Foundation, either version 3 of the License, or          //
// (at your option) any later version.                                        //
//                                                                            //
// The Mist compiler is distributed in the hope that it will be useful,       //
// but WITHOUT ANY WARRANTY; without even the implied warranty of             //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              //
// GNU General Public License for more details.                               //
//                                                                            //
// You should have received a copy of the GNU General Public License          //
// in the COPYING file. If not, see <http://www.gnu.org/licenses/>.           //
////////////////////////////////////////////////////////////////////////////////

///
/// \file
/// Contains the implementation of the Position methods.
///

#include "position.hpp"

////////////////////////////////////////////////////////////////////////////////
// Includes                                                                   //
////////////////////////////////////////////////////////////////////////////////

#include <boost/tuple/tuple.hpp>
#include <boost/tuple/tuple_comparison.hpp>
using boost::make_tuple;

#include "common/assert.hpp"
#include "position.hh"

////////////////////////////////////////////////////////////////////////////////
// Function Implementations                                                   //
////////////////////////////////////////////////////////////////////////////////

Position::Position(const string& f, uint l, uint c) : file(f), line(l), column(c) {
} // intentionally empty

Position::Position(const yy::position& pos): file(*pos.filename), line(pos.line), column(pos.column) {
} // intentionally empty

Position Position::successor() const {
	Position result = *this;
	result.column++;
	return result;
}

Position Position::predecessor() const {
	assert(column > 1);
	
	Position result = *this;
	result.column--;
	return result;
}

bool Position::operator<(const Position& other) const {
	return make_tuple(      file,       line,       column)
	     < make_tuple(other.file, other.line, other.column);
}

ostream& Position::send_to_stream(ostream& out) const {
	out << file << ":" << line << ":" << column;
	
	return out;
}
